Steam-boiler furnace.



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Patented rieb. 14, 1911.A

2 SHEETS-SHEET 1.

G. S. GALLAGHBR. STEAM :BOILER FURNAGE. APPLIUATIDN I'ILED NOV oaonnnm saga-ng @SHEETS-SHEET 2.

Patented. Feb. 14, 1911.

G. S. GALLAGHBR.

STEAM BOILER FURNACE. APPLIUATION Hmm Nov. s. 190s.

-To all 'whom it may concern.:

UNITED STATES PATENT OFFICE. i

GEORGE S. GALLAGHER, OF NEW YORK, N. Y., ASSIGNOB T HENRY GALLAGHEB AND EMMA G. GALLAGHER, OF NEW YORK, N. Y. l

STEAM-nonna ruistlvaeii.`

Specification of Letters latent.

Patented Feb. 14, 1911.

appue'ation'mea November e, 190s. serial No. 526,509.

Be it known that I, GEORGE S. GALLGHER,

I a citizen 'of the United States, residing in the boroughl of Manhattan, city, county, and State of New York, have invented an I mprovement in Steam-Boiler Furnaces, of which the following is a specification.

My resent invention relates to a steam boiler urnace and particularly to the construction of the grate employed, the means for actuating the grate andthe manner .and means employed for feeding the fuel to the conveyer box above the grate.

In carrying out my invention, I preferably employ together with the inclosing walls and the drum-of the steam boiler furnace, a grate member which is preferably circular, means for revolving the grate, means whereb the grate or parts thereof may be raise and dropped to shake the lire, means for conveying the fuel Y' from a pointbelow the grate to the fire-box above the same, means for scraping the grate and means whereby in -the turning of the grate l' ..25

currents of air are r'created and conveyed from vthe space beneath the grate to the firebox immediately above the grate and pref- 4erably at the centra-l'. ortion thereof, all of which will be hereina ter more articularl described. p y

In the drawing, Figure 1 is a central ve'r- Vtical section illustrating my present improvement in steam boiler furnaces. Fig. 2

is a sectional elevation ,approximately on the line m, Fig. l. Fig. 3 is a sectional plan taken above the grate members, Fig. Il is a plan view of the parts employed to drive the moving members.. longitudinal section of the hub for the grate members. Fig. 6 is asimilar view illustrating the ring employed with this hub. Fig.

7 isaside elevation of the member employed to.' coact with the grate members. in shaking.

the `fire. Fig. 8 is an 'end elevation of the same. Fig. 9 is a side elevationofone of the grate bars showing a modified .form thereof l and Fig. 10vis anjend elevation of the same.

Referring. articularlyto the drawings, the steam boi er furnaceco'mprising my presentinvention may be inclosed -in any suitable formbf housing as for instance the.

front wall 11 and side walls' 12; the" rea-rwall not being shown and in al suitable posi- 4tion may be rovided with a4 customary bridge Wallin icated at 13 and the boiler Fig. 5. is a' central drum indicated at 14, which latter as will be understood may be mounted in any suitable manner on the walls of the furnace.

15 designates the flooring preferably on a level with the boiler house floor-.and extending entirely across the s ace between the front wall 11, bridge wa .13 and the intermediate portions of the side walls 12. Beneath this flooring 15 and suitably fixed in the foundation walls in such a position as to abut against the 'under surface of the flooring, there are spaced apart channel members Aindicated at 16, which as will be understood assist in su porting the ooring. Also beneath the ooring 1/5 and in a suitable it provided therefor there is a bearin 1 mounted on a suitable/base. One end o the vertical shaft 18 is journaled in this bearing 17 and secured at the other and up er end of this shaft 18 is a hub 19 which is Xed thereto in any desired manner. Extending radially from the hub 19 are arms 20 and these arms are connected with and made integrally a part of a head 21 which is ,preferably cylindrical and in suitable spaced apart positions is` provided with screw-threaded apertures 22. The upper portion of the head 21 or the extension thereof indicated at 23. is preferably of greater interior diameter and' of less exterior diameter than the lower or main portion of this head 21 and adjacent to the upper edge of this extension lportion' 23 the same isprpvided with a series of spacedl apertures 1ndicated at 24. f.

' 25 designates a ring nember which is also approximately cylindrical, is provided at its upper end with a flange 26 and beneath this flange with series of spaced apertures indicated at 27. .This ring 25 is adapted to t intoand be secured within the head 21 plainly indicated in Fig. 1 in such a position as toprovide an annular chamber between the same andthe inner surface of the extension 23 when the apertures 2'( in the ring 25 will .register approximatelywith the aperf tures 24 in the extension 23.

The upper surface of the head 21 is prov vided with a recess 32 and into these recesses 32 a ring 33 is fitted, this ring 33 being of such a width that when in .position its upper edge is on substantially the same level as the upper edge of the rib 28.

The grate employed in this furnace is preferably made up of a plurality of sectorshaped sections as is indicated in Fig. 3 and one of which is illustrated in Figs. 9 and 10. Each one of these sector-shaped grate tsections 34 comprises a surface memberprovided with series of apertures which are preferably of varying lengths and surrounding depending side and, end members. As is indicated in Fig. 9, the side members of each grate section in the lower edges thereof are provided with recesses 36 and 37, which respectively when the grate section is placed in position are adapted to receive portions of the ring 33 and the circular rib 28, not only to secure each grate section in position but also to support the same;the head member 21 acting as a hub and the ring 33 as a rim upon and with which the grate sections are revolved as hereinafter described. As indicated in Fig. 10, the front side of each grate section is provided with an inclined lower edge 38 extendin approximately one-half the width of the ront side of the grate section, the other half .of which at its lower edge is approximately parallel with the top surface of the section as indicated at 39, and as is also indicated in Figs. 9 and 10, each one of these grate' sections may be provided with a wing 40 depending preferably cen-. rally and at an angle from its under surace.

41 designates a casing which isalso cylinvdricaland passes through an opening provided therefor in the flooring 15 and-is supported upon the cross-piece 42 connected' to the channel members 16. The upper end of this casing 41 receives the lower portion of the head 21 and the latter is adapted to be revolved in the former." The casing 41 Ais also providedswith a branch connection 43 to which is connected a chute 44 provided at its outer end with a hopper 45 adapted to re ceive the fuel to be burned in the boiler. Within the casing 41 is a conveyer shaft 46. This conveyer shaft 46 is hollow and fits over and turns upon the shaft 18 and furthermore is provided with a screw conveyer indicated at'-47.which latter extends from a point immediately above the crossiece 42 to a point immediately below the hu V19. A sprocket or ear wheel 48 is fixed on the Ilower end o theshaft 18 adjacent to the bearing 17 and above the sprocket wheel 48 and on the lower end of the conveyer shaft 46 asprocket or gear wheel 49 isflxed.

'l Exteriorly-of thefront wallof the boiler and suitably arranged there are upright members 50 and cross-pieces 51 forming a I end. A

suitable frame and provided with bearings in which shafts 52 and 59 are journaled. The shaft 52,passes throughthe ooring 15 and adjacent to its lower end is provided with a sprocket or gear wheel 53 and a chain 54 passes around and extends between the .sprocket 53 and'sprocket-49. At its upper end the shaft 52 is provided with a ratchetwheel 55 and 'beneath the ratchet 55 there is loosely mounted on the shaft 52 a crank 56, which carries the pawl 57 adapted to engage the teeth 'of the ratchet 55, and at its upper extremity the shaft 52-is provided with a collar 58 to maintain the parts in their respective positions thereon, and as will be understood, this collar may bemade integral with the sprocket 55. The shaft 59 also passes through thel flooring 15 and a sprocket 60 is secured thereto adjacent' to its lower chain 61' extends between and passes around the sprocket 60' and the sprocket 48. In any suitable position above the flooring 15 a gear 62 is fixed on the shaftl '59 and this gear 62 meshes with a worm 63 on a shaft 64, which l latter is journaled in suitable brackets 65 which are secured in the upright members 50. It. will be understood that this shaft 64 may be driven at any de' sired speed from and by any suitable source of power. On its upper end-the shaft 59 has fixed thereto an eccentric 66 provided with which there is an eccentric strap 67 pivotally connected atl 68 with one ofthe cross-pieces 51, and at the opposite 'side provided with an extension 69 in which there 4is a slot 70 as indicated in Fig. 4.

71 designates a link which at one end is pivotally connectedto the free end of the crank 56 as indicated-at 72 and at the opposite end is adjustably secured in the slot 7 O by means of the nut 7301 otherwise.

74 designates a rod adapted to be passed through a portion of the front wallof the furnace in which an aperture. `is provided therefor and at its inner end this rod 74 is provided with a plate head 75, the upper 'edge of'which is inclined as indicated 'at 76.

.this plate 77. is so placed that the same may be inserted or moved inwardly toextend Grossa portion of the surface ofthe grate ,bars so. as to scrape the same and also to cause clinkers and any other matter which n. all? will not pass 'through the apertures in the -grate sections to be forced 4outwardly into the passageway 79, from which these foreign substances may be readily removed by suitable tool. j p may yalso provide in the front wall of the boiler indicated at '8O a door which is adapted to cover an opening in this Wall providing access to the tire-box or space above the grate, and I may also provide a door 83 in oney of the side walls, or other described apparatus, the coal or other fuel f is supplied to the hopper 45and passes by way of the chute 44 tothe interior of the casing 41. The shaft 59 and gear 62 thereon are preferably turned in the direction of the arrow Fig. 4 by means of the worm 63 and through the eccentric 66 and eccentric strap 67, the arm 69, the link 71 and crank 56 and the shaft 52 is given a partial revolu?` tion by means of the ratchet 55 in the pawl 56 for everyrevolution of the shaft 59. The

through the head 21 an conve er shaft 46 is revolved by the turning o the shaft 52 by means of the sprockets [53, 49, andthe chain 54, and the fuel is fed lby the screw-conveyer upwardly and preferably vertically through .the casilig 41,

out onto -t e surface of the grate sections; the fuel thereby being su plied centrally to the grate. The

l heads 3() through the tubular arms 29 into shaft 18 is revolved by the shaft 59 by means of the sprockets 60, 48, and the Vchain 61. The turning of the shaft 18 causes the head 21 audits associated parts to revolve, carrying therewith the grate sections 34. Now it will be apparent that as the hub or head 21 revolves, air is admitted at the nozzles 31 and passes therefrom into the box-shaped the annular" space'85' between the ring 25 and the extension 23 andthrough the aperl'tunes 24 outwardly and through the apertures 27 inwardly. It will also be apparent lthatthe wings 40 depending from the grate sections will also tend to cause the air beneath the grate to pass upwardly through the apertures therein; When the'rod 74 isA pushed inwardly as the grate revolves, each grate section by the .inclined edge 38 on its front sideis raised from its normal position .at its outer edge and this condition exists until after the inclined edge38 has passed over the inclined edge 76 of the head 75 on the rod- 74, when as will be understood the grate section which hasV been raised will drop backinto position and by the impact from falling in place will cause the fire vto be shaken automatically.v It will also be understood, as hereinbefore indicated, that when the plate 77 is pushed inwardly s0.

that its inner end extends over 4a portion of the gratesurface, the grate will not only but clinkers and other foreign` be scraped, substances which will no t pass through grates may. be forced into the passageway 79 and so removed from the fire-box.

I claim as my invention: y 1. In a steam boiler furnace, a revoluble grate,-means for supporting the same, means for continuously turmng the said grate while in use and means connected -to and moving with the said grate, wherebyili its revolution, currents of air are created and continuouslyv conveyedfrom thespace beneath the grate to approximately central points above the same.

2.. In a steam boiler sectional grate, means for supporting the same, means for continuously turning the said grate while infuse, means connected to and moving with the said grate whereby in its revolution, currents of air are created and 'continuously conveyed from the space beneath the grate to approximately central points above the same, and means operative during the vrevolution of the grate for shaking successively the sections of the grate.

3. In a steamboiler furnace, a revoluble grate, means for supporting the same, means for continuously turning the said grate' while in use, means connectedl to and moving withl the Asaid grate, whereby in its revolution, currents of air are created and continuously conveyed from the space beneath the furnace, a revoluble grate to approximately 4central points above the same, and means o erative during the Lrevolution of the grate or scraping the upper surface thereof and forcing out such matter as will not pass therethrough.

4. In a steam boiler furnace, a revoluble grate composed of a plurality of sections, means for supporting each grate section, means for turningthe said grate and its support, and means connected to and moving with the verrate, whereby in its revolution, currents o air are created and continuously .conveyed from the space, beneath'the grate to approximately central points above the same.: y Y

5. In a steam Vboiler furnace, a revoluble' grate composed of a plurality of. sections, means for supporting each grate section, means for turning the said grate and its sup port, meansmoving with the grate, whereby in its revolution,currents of air' are created and continuously conveyed from the space beneath the grate to approximately central points above the same,'and meansp'erative during the revolution of the grate for shalt ing successively the sections of the grate. i

y6. In asteam boiler furnace,a grate com? 7. In a steam boiler furnace, a grate comprising a plurality of sector-shaped sections, a frame upon which said grate sections are supported, a shaft to which said frame is connected, means whereby said shaft is turned to revolve the grate, means moving with and connected to the grate, whereby in its revolution, currents of air are created and continuously conveyed from the space beneath the grate to approximately central points above the same, and means whereby in the revolution of the grate, each section thereof may be separately and automatically shaken;

8. In a steam boilervfurnace, a grate comprising a plurality of sections, a frame for supporting the same, a shaft to which the said frame is secured, -means for turning the said shaft to revolve the grate, the said frame including meansl connected Ito the grate whereby through the revolution of its parts, currents of air are .created and continuously conveyed from the space beneath the grate to approximately central points above the same, and means whereby in the revolution of the'grate, each section thereof may be separatelyand automatically shaken.

9. In a steam boiler furnace, a grate com-k prising a plurality of sections, a support for the same having a central aperture therein, the said grate support including means whereby in the revolution of its parts withl the grate, air currents are created and continuously conveyed from the space beneath the grate to points approximately central above the same, means for turning the said support and thereby revolving the grate, a

,conveyer for feeding the fuel to the said grate through the said central aperture in the said support, and means whereby the said conveyer is actuated by the said means for revolving the grate.

10. In a steam boiler furnace, a shaft, a

"hollow head secured to said shaft and provided with an annular chamber surrounding the same with apertures providing communication from said annular chamber to both the interior and exterior of the said hollow head, tubular arms secured at one end to the said head and communicating with the said annular chamber,`nozzles connected to the other and outer of the said arms and communicating with the interiors thereof, a grate comprising a plurality of sections, eachvof which is supported by the said head and the 11. In a steam boiler furnace, a-'shafta` -head secured to said shaft, provided with a central longitudinal opening and an interior annular air passage, tubular arms, connect- 1ed to the said head and communicating with said annular air passage and being also provided with apertures in the walls of the said head leading both inwardly and outwardly from the saidannular air passage, nozzles connected to the said tubular arms, a ring Ysupported by the said tubular arms, a rib integral with the said head, a grate comprising a plurality of sections each of which is provided with recesses adapted respectively to receive portions ofthe said ring and rib,

and means for turning said shaft to revolve the said head, arms and grate sections.

l2. In a steam boiler furnace, a shaft, a head secured to said shaft, provided with a central longitudinal opening and an interior annular air passage, tubular arms connected to the said head and communicating with said annular air passage and being also provided with apertures in the walls of the said head leading both inwardly and outwardly from the said annular air passage, nozzles connected to the said tubular arms, a ring supported by the said tubular arms, a rib integral with the said head, a grate comprising Va plurality 'of sections each of which is provided with recesses ladapted respectively to receive portions of the said ring and rib, means for turning said shaft to revolve the said head, arms and grate sections, a conveyer 4shell placed vertically beneath said grate and at its upper end adapted to receive the said head, a conveyer shaft surrounding the aforesaid shaft, .a conveyer screw on the said conveyer shaft operating within the said conveyer shell and lregulatable means for turning the'K said conveyer shaft through and by theI aforesaid means for turning the first aforesaid shaft, head and grate sections.

13. In a steam boiler furnace, a grate,

support for the same having a central longitudinal opening therein, a shaftl to which the said grate support is connected, a conveyer shaft surrounding` the y said vgrate frame shaft, a conveyer screwonthe said conveyer shaft, a casing for the said conveyer screw, means for feeding fuel to the interior of the said casing, a counter-shaft, means for turning thesaid grate frame shaft from the said counter-shaft and means actuated by the said counter-shaft for driving the said feed screw shaft and regulating the speed thereof. 14C. In a steam boiler furnace, a grate comprising aplurality of sections, a frame upon which the said grate sections are supported, the frame being provided with a central longitudinal opening, a shaft connected to the said grate support, a eonveyer shaft, a screw4 on the said confeyer shaft, a Casing surrounding the said conveyer screw, a oountei'shaft, `means for turning the said support ring shaft'from the said counter-shaft and means actuated by 'the said countershaft for driving said 'screw and conYeyer shaft nd regulating the speed thereof.

`15. In a steam lpoiler furnace, aJ grate comprising a plurality of "sections,` a frame upon which the said grateseotions are supported, the frame being provided witha central lonl gitudinal opening,'a shaft connected tothesaid grate support, a conveyer shaft, a screw onthe said `oonveyer shaft, a casing sur-" rounding thesaid conveyer screw, a countershaft, means for turning the said support ring shaftfrom the said counter-shaft, an auxiliary c0unter-shaft from the said counter-shaft andv regulating the speed thereof andmeans for driving the Said feed screw and its shaft from said auxiliary countershaft, 4

signed by me this soul day. of october' GEORGE S.A GALLAGHER.

Witnesses v GEO. T. PINCKNEY, E. ZACHARIASEN. 

